I'm trying to run a java program on windows in VSCODE. When I click the run button at the top it opens the Java Process Console and runs the following command:
$ cmd /C "c:\Users\user\.vscode\extensions\vscjava.vscode-java-debug-0.31.0\scripts\launcher.bat "C:\Program Files\AdoptOpenJDK\jdk-11.0.10.9-hotspot\bin\java.exe" -Dfile.encoding=UTF-8 #C:\Users\jbree\AppData\Local\Temp\cp_7gau2431e54dxprosf092viw9.argfile com.example.restservice.RestServiceApplication "
It then prints out: Command 'cmd' not found, but there are 16 similar ones., and I'm not too sure what to do afterwards.
I just ran into this exact issue! After some debugging, I found out it's because my terminal (in VS Code) was running off of WSL.
Make sure to check which terminal you're using! If you're trying to run Java locally, then you can configure a default shell ie. bash.
Let me know if this helps.
Edit: I also found this, not sure if it will help, but here you go!
https://stackoverflow.com/a/58058378/11060097
your java debugger is using wsl. and most likely your java is installed on windows. not linux on windows. to fix this for me, i changed the settings for java debugging to use the external console. settings->java debugger->externalTerminal . this will then use the "external windows" setting for vscode. which should use cmd.exe (the windows shell, no linux).
This error happens because you probably have wsl has your standard terminal but it's probably configured to launch cmd using a windows path.
WSL won't understand what that windows path is, so you need to change it using a path structure it can understand
So
hit Ctrl+, to hit the Settings screen
type in terminal to see all the terminal settings
You will see an option called Terminal> External:Windows Exec
Change C:\Windows\System32\cmd.exe to /mnt/c/Windows/System32/cmd.exe
I had this error too and came here initially but I managed to figure out it was an incompatible path issue that was the cause.
Related
I was using WSL while learning programming in Python at the university, but have Java installed in the Windows filesystem. Now that we switched to learning Java, VScode is trying to debug from the WSL terminal, which does not work. How can I tell VScode to run the debug on the Command Prompt? I guess something path related but I am a bit lost.
I get the following error message:
cmd /C "c:\Users\lukas\.vscode\extensions\vscjava.vscode-java-debug-0.35.0\scripts\launcher.bat "C:\Program Files\Java\jdk-11.0.2\bin\java.exe" -agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=localhost:50567 -Dfile.encoding=UTF-8 -cp "C:\Users\lukas\AppData\Roaming\Code\User\workspaceStorage\bf1d90699671e44dd71540a7194feefe\redhat.java\jdt_ws\Java DD1380_9c46b501\bin" Sumsort "
Command 'cmd' not found, but there are 17 similar ones.
Open integrated Terminal and click the selection box, choose Select Default Profile, in the popping up list box, choose Command Prompt, then press Ctrl+Shift+` to open a new integrated Terminal, it's cmd.
Debugging .java file is also executed in CMD window in terminal. See the following gif:
I'm working with an older version of Eclipse, Helios SR1.
I need to be able to start eclipse from the terminal.
In review of http://wiki.eclipse.org/FAQ_How_do_I_run_Eclipse%3F
I execute the following command in Terminal to start eclipse.
/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java -jar plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
and I get
Root exception: java.lang.NoClassDefFoundError:
org/eclipse/swt/SWTError
So this appears to be more complex than what was found in the above link. If I double-click the Eclipse.app it starts right up.
I'm wondering what else needs to be done to allow the Command Line Eclipse Launcher to work properly
You should just be able to use the open command:
open /path/to/eclipse.app
or
open -n /path/to/eclipse.app
will open a new instance of Eclipse even if one is already running.
If you must use the Java command you need to specify -XstartOnFirstThread before the -jar option:
java -XstartOnFirstThread -jar ...
Use the eclipse launcher binary:
<Your-Install-Path>/Eclipse.app/Contents/MacOS/eclipse
Default start-up options are set in eclipse.ini:
<Your-Install-Path>/Eclipse.app/Contents/Eclipse/eclipse.ini
Kepler start-up options are documented here: https://help.eclipse.org/kepler/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html (Helios link redirects to Kepler, the oldest one they have kept available)
The launching process is explained in detail here: https://help.eclipse.org/2019-03/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/launcher.html
In the Process of installing spark 1.0.0 by double clicking the bin/spark-shell windows command script file. Then opened one command prompt file and then immediately closed it self only. Are there any commands required to run this. Could you please tell me step by step process.
First of all, you have to open a terminal. Theorically, you at least have the following on your machine :
cmd (for sure)
powershell (maybe not, if you're using Vista or less).
From there, you have two options :
if you added path_to_spark_folder\bin to your PATH variable (see there for more informations), you can run spark-shell as soon as the console is opened
if you didn't, you'll have to go to path_to_spark_folder\bin yourself, using the cd command.
You now can run spark-shell.
In an application I am writing, I am launching another application (a runnable JAR) using Runtime.exec(...). Everything launches successfully in Windows, but Linux (specifically certain installations of CentOS - works in Ubuntu) has been giving me some problems. For some reason, the only way the secondary application will successfully launch is if I execute the first through a terminal. All behavior works as expected. However, if I launch the first application by double-clicking its icon (without a terminal open), the button to launch the second application seems to do nothing. I get no exceptions or error output - just a flash of my progress bar saying that it is launching, and then nothing. I can confirm through jconsole that the second application's process is never launched.
I have seen the commonly linked article on the pitfalls of the exec method ( http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html ), but have not been able to solve this problem with anything I have found there. I am in fact reading the output and error streams of the second process, as I see all output when it successfully runs (after launching the first application through a terminal command). Not knowing a lot about deeper workings of Linux, I think this sounds like it may be a permissions issue with the output stream or something, but I am not sure.
In case it helps to diagnose the problem, I am using the command:
rt.exec(new String[]{"\bin\bash", "-c", "java -jar myjarfile.jar myArg1 myArg2 ..."}); Since this works (depending on how the application is launched), I'm not too concerned that anything is wrong with this piece of code...
Anyone have any suggestions? Thanks in advance!
EDIT: The solution was to fix the directory to the JAR I was attempting to run. When launched via the GUI, user.dir was pointing to the parent directory of the folder containing my application. Since I'm using Eclipse RCP, my solution was to use
String currDirPath = Platform.getInstallLocation().getURL().toString(); instead. Thanks for the help everyone!
Since you're just using the jar file name - myjarfile.jar - and not the full path to it, depending on the current working directory, the jar may or may not be found. Try changing your exec command to use the full path to the jar instead. You can debug this by using rt.exec() to write the output of 'pwd' to a text file.
instead of
rt.exec(new String[]{"\bin\bash", "-c", "java -jar myjarfile.jar myArg1 myArg2 ..."});
use
rt.exec(new String[]{"\bin\bash", "-c", "/***path to java***/java -jar myjarfile.jar myArg1 myArg2 ..."});
I'm trying to learn Java and I'm having problems with the appletviewer command. I am using openSUSE 11 and am able to compile and run normal java programs but when I issue the appletviewer command I'm getting the following error "bash: appletviewer: command not found".
I have set the PATH variable in the .bashrc file. so the problem is not that of the path. This can also be verified from the fact that javac and java commands are working normally. I have googled and tried many said resolution but none is working. I have even tried moving the files to the bin folder and running the command from there.
So what may the cause of this? Isn't appletviewer designed to work in linux? And FYI I have replaced the OpenSDK and IcedTea versions with the jdk1.6.0_14 version from the sun site. Please help.
Thanks
Chris
As a test, do the following:
$which java
$which appletviewer
Check to see if the paths are different. If the second command gives no output, appletviewer may not even be installed (or can't be located by your system).
You need to install java-1_6_0-sun-devel-1.6.0.u14-0.2.1
$ sudo zypper install java-1_6_0-sun-devel
You will find it in the openSUSE-11.1-Non-Oss repository.